2FVJ

A novel anti-adipogenic partial agonist of peroxisome proliferator-activated receptor-gamma (PPARG) recruits pparg-coactivator-1 alpha (PGC1A) but potentiates insulin signaling in vitro


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A novel partial agonist of peroxisome proliferator-activated receptor-gamma (PPARgamma) recruits PPARgamma-coactivator-1alpha, prevents triglyceride accumulation, and potentiates insulin signaling in vitro

Burgermeister, E.Schnoebelen, A.Flament, A.Benz, J.Stihle, M.Gsell, B.Rufer, A.Ruf, A.Kuhn, B.Maerki, H.P.Mizrahi, J.Sebokova, E.Niesor, E.Meyer, M.

(2006) Mol.Endocrinol. 20: 809-830

  • DOI: 10.1210/me.2005-0171

  • PubMed Abstract: 
  • Partial agonists of peroxisome proliferator-activated receptor-gamma (PPARgamma), also termed selective PPARgamma modulators, are expected to uncouple insulin sensitization from triglyceride (TG) storage in patients with type 2 diabetes mellitus. The ...

    Partial agonists of peroxisome proliferator-activated receptor-gamma (PPARgamma), also termed selective PPARgamma modulators, are expected to uncouple insulin sensitization from triglyceride (TG) storage in patients with type 2 diabetes mellitus. These agents shall thus avoid adverse effects, such as body weight gain, exerted by full agonists such as thiazolidinediones. In this context, we describe the identification and characterization of the isoquinoline derivative PA-082, a prototype of a novel class of non-thiazolidinedione partial PPARgamma ligands. In a cocrystal with PPARgamma it was bound within the ligand-binding pocket without direct contact to helix 12. The compound displayed partial agonism in biochemical and cell-based transactivation assays and caused preferential recruitment of PPARgamma-coactivator-1alpha (PGC1alpha) to the receptor, a feature shared with other selective PPARgamma modulators. It antagonized rosiglitazone-driven transactivation and TG accumulation during de novo adipogenic differentiation of murine C3H10T1/2 mesenchymal stem cells. The latter effect was mimicked by overexpression of wild-type PGC1alpha but not its LXXLL-deficient mutant. Despite failing to promote TG loading, PA-082 induced mRNAs of genes encoding components of insulin signaling and adipogenic differentiation pathways. It potentiated glucose uptake and inhibited the negative cross-talk of TNFalpha on protein kinase B (AKT) phosphorylation in mature adipocytes and HepG2 human hepatoma cells. PGC1alpha is a key regulator of energy expenditure and down-regulated in diabetics. We thus propose that selective recruitment of PGC1alpha to favorable PPARgamma-target genes provides a possible molecular mechanism whereby partial PPARgamma agonists dissociate TG accumulation from insulin signaling.


    Organizational Affiliation

    Pharmaceuticals Division, Department of Vascular and Metabolic Diseases, Fa. Hoffmann-La Roche AG, CH-4070 Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peroxisome proliferator-activated receptor gamma
A
271Homo sapiensGene Names: PPARG (NR1C3)
Find proteins for P37231 (Homo sapiens)
Go to Gene View: PPARG
Go to UniProtKB:  P37231
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nuclear receptor coactivator 1
B
13Homo sapiensGene Names: NCOA1 (BHLHE74, SRC1)
EC: 2.3.1.48
Find proteins for Q15788 (Homo sapiens)
Go to Gene View: NCOA1
Go to UniProtKB:  Q15788
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
RO0
Query on RO0

Download SDF File 
Download CCD File 
A
1-(3,4-DIMETHOXYBENZYL)-6,7-DIMETHOXY-4-{[4-(2-METHOXYPHENYL)PIPERIDIN-1-YL]METHYL}ISOQUINOLINE
ISOQUINOLINE DERIVATIVE PA-082
C33 H38 N2 O5
DJEGOJNHRNRMHS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 53.483α = 90.00
b = 65.897β = 90.00
c = 87.538γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-16
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance